I saw a link to this on the yahoo BLW site - it's an audio clip from Woman's Hour from 2004 and includes a chat with Gill Rapley (the main 'expert' in this) and Annabel Karmel (the weaning 'guru' who doesn't much like it, probably because we wouldn't need to buy her puree recipes!). Gill Rapley gives a very good defence of the 'won't they choke? argument'
Try the link below - it will not take me directly to the page for some annoying reason, although it will in hotmail - but if you type in 'baby feeding' in the search box it will take you to a list of archives and the one you want is the fourth item in the list.
\link{http://www.bbc.co.uk/radio4/womanshour/2004_23_thu_01.shtml\Gill vs Annabel on BLW}